<select ng-model="selected" ng-options="x.id as x.name for x in users"></select>
$scope.users = [
{name:'a',id:'1'},
{name:'b',id:'2'},
{name:'c',id:'3'}
];
$scope.selected='2';//id的值，区分类型
$scope.selected=$scope.users[0].id;//如果想要第一个值
来源：itnose
